Class: Cisco::Yum

Inherits:
Object
  • Object
show all
Defined in:
lib/cisco_node_utils/yum.rb

Overview

This Yum class provides cisco package management functions through nxapi.

Constant Summary collapse

@@node = 
Cisco::Node.instance

Class Method Summary collapse

Class Method Details

.decompose_name(file_name) ⇒ Object 



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# File 'lib/cisco_node_utils/yum.rb', line 27

def self.decompose_name(file_name)
  # ex: chef-12.0.0alpha.2+20150319.git.1.b6f-1.el5.x86_64.rpm
  name_ver_arch_regex = /^([\w\-\+]+)-(\d+\..*)\.(\w{4,})(?:\.rpm)?$/

  # ex n9000_sample-1.0.0-7.0.3.x86_64.rpm
  name_ver_arch_regex_nx = /^(.*)-([\d\.]+-[\d\.]+)\.(\w{4,})\.rpm$/

  # ex: b+z-ip2.x64_64
  name_arch_regex = /^([\w\-\+]+)\.(\w+)$/

  file_name.match(name_ver_arch_regex) ||
    file_name.match(name_ver_arch_regex_nx) ||
    file_name.match(name_arch_regex)
end

.get_vrf ⇒ Object 



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# File 'lib/cisco_node_utils/yum.rb', line 61

def self.get_vrf
  # Detect current namespace from agent environment
  inode = File::Stat.new("/proc/self/ns/net").ino
  # -L reqd for guestshell's find command
  vrfname = File.basename(`find -L /var/run/netns/ -inum #{inode}`.chop)
  vrf = "vrf " + vrfname unless vrfname.empty?
  vrf
end

.install(pkg, vrf = nil) ⇒ Object 



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# File 'lib/cisco_node_utils/yum.rb', line 70

def self.install(pkg, vrf = nil)
  vrf = vrf.nil? ? get_vrf : "vrf #{vrf}"
  @@node.config_set("yum", "install", pkg, vrf)

  # HACK: The current nxos host installer is a multi-part command
  # which may fail at a later stage yet return a false positive;
  # therefore a post-validation check is needed here to verify the
  # actual outcome.
  validate(pkg)
end

.query(pkg) ⇒ Object

returns version of package, or false if package doesn’t exist

Raises:

  • (TypeError) 


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# File 'lib/cisco_node_utils/yum.rb', line 82

def self.query(pkg)
  raise TypeError unless pkg.is_a? String
  raise ArgumentError if pkg.empty?
  b = @@node.config_get("yum", "query", pkg)
  raise "Multiple matching packages found for #{pkg}" if b and b.size > 1
  b.nil? ? nil : b.first
end

.remove(pkg) ⇒ Object 



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# File 'lib/cisco_node_utils/yum.rb', line 90

def self.remove(pkg)
  @@node.config_set("yum", "remove", pkg)
end

.validate(pkg) ⇒ Object 



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# File 'lib/cisco_node_utils/yum.rb', line 42

def self.validate(pkg)
  file_name = pkg.strip.gsub(':', '/').split('/').last
  pkg_info = Yum.decompose_name(file_name)
  if pkg_info.nil?
    query_name = file_name
  else
    if pkg_info[3].nil?
      query_name = pkg_info[1]
    else
      query_name = "#{pkg_info[1]}.#{pkg_info[3]}"
    end
  end
  should_ver = pkg_info[2] if pkg_info && pkg_info[3]
  ver = query(query_name)
  if ver.nil? || (!should_ver.nil? && should_ver != ver)
    raise "Failed to install the requested rpm"
  end
end